Patient: In the past month, red bumps were common on the elbow, wrist, lower calf, back of the hand and ring finger, and forehead area, but they cleared up in a few days. In the last few days, he found that his left elbow was swollen, he slept well, he did not have any abnormalities except that he cried when he touched this area with force, and he could move his left arm freely. He was diagnosed with Langerhans cell hyperplasia after a radiographic examination at Shandong Provincial Hospital. The rash disappeared in the past two days and did not reappear, and there was no fever. When the red bumps appeared, some topical medication for mosquito bites was applied to the skin surface and no other treatment was given. The doctor at the provincial hospital looked at the film and said that the cells had stopped growing and were in the repair stage, so there was no need for surgery for the time being and the child’s immune system should be strengthened. I would like to know if there is a possibility of self-repair in this case? Now that the rash has disappeared as a symptom, does it mean that the cell growth has stopped and can repair itself. If it repairs itself and the immunity increases, will it recur? If it continues to grow, is there a good chance of cure? How threatening is it to life? If the rash appears again, skin biopsy can be considered, which is less damaging. Children younger than 2 years old have more damage to other systems and need ultrasound to see if there is hepatosplenomegaly, lung damage, ear discharge, head mass, and polyuria. If it is LCH, it is less likely to heal itself in this young age group, and it is more likely to continue to progress, and if it progresses to multiple organ function abnormalities, the prognosis will be much worse, the prognosis will be relatively better when treated for single system injury, and the recurrence rate is less, so pay attention to close monitoring, and if once the pathology is confirmed, early treatment is recommended. A: the consultation process: first of all, to the surgery (orthopedics) about the bed to do pathology biopsy, after the biopsy, waiting for the pathology out of the period can first go home to recuperate, nurse the wound, wait until the pathology, electron microscopy results are out, the wound recovery is almost, to the blood three wards about the bed (before you do not need to see the hematology clinic also do not need to make a bed, no pathology diagnosis is not accepted), will do a full set of evaluation, then you will know the child The end belongs to that risk group, there are those places damaged, a single bone destruction, the general situation allows, is to scrape, the bone will mostly repair itself, do not need to find the bone repair, related details and functional damage situation specific to ask the orthopedic surgeon. You’d better book an orthopedic number from the Internet or telephone 114 first, see the orthopedic clinic before you can make an appointment for an orthopedic biopsy bed hospitalization, the bed at Beijing Children’s Hospital is never relatively tight, not come on may have. After the orthopedic department does the pathology first, once the pathology is confirmed, you can make an appointment for a bed in the hematology department, and if it is only the group with bone damage, chemotherapy is also easier. After the evaluation test, no matter which risk group, generally come to the hospital once a week with drugs, and then take some drugs orally, a few months later you can return to the hospital with chemotherapy at longer intervals, regular evaluation, the course of medication for about a year can be stopped, since you are in Shandong, be prepared to rent a house, do not know the child eventually belong to that group, and do not know whether the chemotherapy is smooth, it is best to prepare at least about 100,000 treatment costs. The biggest problem with LCH is that it is easy to relapse, but most chemotherapy is still effective after relapse, so you should be prepared for this.